This reduces average pause of MinorMC in Richards benchmark from 0.32ms
to 0.25ms:

baseline pause
  len: 22
  min: 0.3
  max: 0.6
  avg: 0.322727272727
  [0,5[: 22

pause
  len: 22
  min: 0.2
  max: 0.7
  avg: 0.254545454545
  [0,5[: 22

Bug: chromium:651354
Change-Id: I701ca800d7c6986534d1de2e3051476e91a88d7d
Reviewed-on: https://chromium-review.googlesource.com/1055507Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53125}